body{
				background:url(../img/cen.jpg);
				background-size: 100% 100%;
				width: 100%;
				height: 100%;
			}
			#hei{
				height: 100px;
			}
			.box{
				width: 70%;
				height: 60%;
				margin: 0 auto;
				border-radius: 20px;
				overflow: hidden;
				background: #FFFFFF;
				box-shadow: 0px 2px 21px 4px #ccc;
			}
			.box .box-bb{
				font-weight: bold;
				height: 80px;
				text-align: center;
				font-size: 28px;
				line-height: 80px;
				border-bottom: 1px solid #ccc;
				letter-spacing:5px;
			}
			.box .main{
				height: 230px;
				text-align: center;
				line-height: 230px;
			}
			
			.box .main span{
				font-size: 170px;
				color: #69B73F !important;
			}
			.box .btnn a{
				display: block;
				width: 80%;
				height: 50px;
				line-height: 50px;
				background: #EF4F4F;
				margin: 0 auto;
				text-align: center;
				border-radius: 50px;
				font-size: 35px;
				font-weight: bold;
				color: #FFFFFF;
			}
			
			@media screen and (min-width: 768px) {
				.box .box-bb{
					font-size: 36px;
					height: 100px;
					line-height: 100px;
				}
				.box .main{
					height: 400px;
					line-height: 400px;
				}
				.box .main span{
					font-size:300px ;
				}
				
			}
			@media screen and (max-width: 360px) {
				.box .box-bb{
					font-size: 24px;
					height: 60px;
					line-height: 60px;
				}
				.box .main{
					height: 200px;
					line-height: 200px;
				}
				.box .main span{
					font-size:150px ;
				}
			}
			